Atoms and Elements

Multiple Choice

Which of the following statements best describes an atom?

• An atom is the smallest unit of non-living things.

• An atom is the largest unit of living things.

• An atom is only made up of protons.

• An atom cannot be modeled.

Multiple Choice

What are the three main subatomic particles that make up an atom?

• Protons, neutrons, electrons

• Neutrons, electrons, molecules

• Atoms, elements, protons

• Electrons, molecules, compounds

Multiple Choice

Which subatomic particles are found in the nucleus of an atom?

• Protons and neutrons

• Electrons and protons

• Neutrons and electrons

• Only protons

Fill in the Blanks

A substance that cannot be

into simpler substances by chemical means is called an element.

Multiple Select

Which of the following statements are true about elements?

• All atoms in an element have the same number of protons.

• Elements can be broken down into simpler substances by chemical means.

• Elements are made of atoms.

• Elements are always found as single atoms in nature.

Open Ended

Explain the relationship between atoms and elements, and how the structure of an atom determines the identity of an element.

Open Ended

Based on the video, compare the atomic structure of fluorine and zinc. What differences can you identify in their number of subatomic particles?

Multiple Choice

Which subatomic particle does the atomic number of an element represent?

• Protons

• Neutrons

• Electrons

• Quarks

Multiple Choice

Which of the following statements about element symbols is correct?

• The first letter is always capitalized, and the second letter (if present) is lowercase.

• Both letters are always capitalized.

• The symbol always has three letters.

• The symbol is always based on English.

Fill in the Blanks

Some element symbols are based on other languages. For example, the symbol Fe stands for

.

Open Ended

Why do you think many element names and symbols are based on other languages? Give an example if possible.

Multiple Select

Select all correct statements about element names and symbols.

• Every element has a unique name.

• Many element names are based on other languages.

• All element names are new and modern.

• Every element symbol is made of one or two letters.

Multiple Choice

Why is chlorine named after the Greek word 'khloros'?

• Because it is a yellowish green color

• Because it is a metal

• Because it is found in water

• Because it is a gas

Open Ended

Explain the process by which newly discovered elements are named and approved.

Multiple Select

Which of the following particles contribute to the atomic mass of an atom?

• Protons

• Neutrons

• Electrons

• Quarks

Fill in the Blanks

Electrons do NOT count towards the

because they are tiny.

Open Ended

Describe how atomic mass is determined and why electrons are not included in its calculation. Use information from the slides to support your answer.

Fill in the Blanks

The atomic mass shown as a decimal is due to the average mass of the

of that element.

Open Ended

How could you tell what element it is if only a model was present?

Multiple Choice

Which subatomic particle changes the element's identity when added to the atom?

• Proton

• Neutron

• Electron

• Photon

Multiple Choice

What two subatomic particles add up to make the mass of an atom?

• Protons and neutrons

• Protons and electrons

• Neutrons and electrons

• Electrons and positrons

Fill in the Blanks

The periodic table organizes elements by increasing atomic

Fill in the Blanks

The smallest unit of non-living things is the

.

Open Ended

Reflecting on today's lesson about atomic structure, what is one question you still have or one concept you would like to explore further?